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Aston Martin DB9 V12/AM11 Specialist Engine ReplacementCompare Quotes

Get specialist quotes from UK Aston Martin DB9 engine experts. Compare reconditioned & rebuilt engines for DB9 to Volante - V12/AM11 covered. Get specialist quotes for your DB9.

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Aston Martin DB9 AM11 V12 petrol engine - AM11 AM11A rebuilt reconditioned UK
DB9 5.9L V12 Petrol Engines- from £17,000 to £27,000

Rebuilt units from £17,000

Common codes: AM11, AM11A

Aston Martin DB9 AM11A V12 petrol engine - AM11A AM11 rebuilt reconditioned UK
DB9 Facelift 6.0L V12 Engines- from £19,500 to £27,000

Rebuilt units from £19,500

Common codes: AM11A, AM11

Aston Martin DB9 Cosworth V12 engine - AM11 AM11A rebuilt reconditioned UK specialist
DB9 Cosworth V12 Performance Engines- from £22,000 to £27,000

Rebuilt units from £22,000

Common codes: AM11, AM11A (Cosworth-built)

Aston Martin DB9 engine replacement UK - compare reconditioned and rebuilt engine prices
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Engine Intelligence

Aston Martin DB9 Engines - Codes, Common Failures & Replacement Costs

The cards below cover the V12 engines fitted to the Aston Martin DB9 in the UK - including documented failure causes like ticking noise and coil pack issues, production years across Coupe and Volante variants, and typical rebuilt engine costs based on current UK market data.

Aston Martin DB9 engine intelligence reference

AM11

Production History

  • 2dr Coupe 6.0 V12 (470bhp) - 2004-2008
  • Volante 6.0 V12 (470bhp) - 2004-2008
  • Sport Pack variants - 2006-2008

Known Failures

  • Ticking noise from hydraulic lash adjusters - documented across early Cosworth-built AM11 blocks, often requiring full rebuild.
  • Coil pack failure on cylinders 3, 9, 10 - common misfire pattern on pre-facelift units causing rough running.
  • Oval cylinder bore wear - specific to early Cosworth AM11 blocks, identified by specialist rebuilders as critical failure point.

Specs

Petrol · 5.9L · 470hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £17,000-£24,000 (supply only)

AM11A

Production History

  • 2dr Coupe 6.0 V12 (510bhp facelift) - 2008-2012
  • Volante 6.0 V12 (510bhp facelift) - 2008-2012
  • Carbon Black Edition - 2009-2012

Known Failures

  • Lash adjuster ticking persists on facelift units - though improved, still documented in owner forums as common complaint.
  • Ignition coil degradation - similar cylinder-specific misfire patterns to pre-facelift, particularly on higher-mileage examples.
  • Oil consumption increase - reported on facelift AM11A units beyond 60k miles, often linked to valve stem seal wear.

Specs

Petrol · 6.0L · 510hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £19,500-£27,000 (supply only)

AM11 (Cosworth-built)

Production History

  • Early production Coupe 6.0 V12 - 2004-2006
  • Early production Volante 6.0 V12 - 2004-2006
  • Pre-facelift Sport Pack variants - 2004-2008

Known Failures

  • Small-end bearing failure - documented on early Cosworth AM11 blocks, can lead to catastrophic bottom-end damage if ignored.
  • Cylinder liner ovalisation - unique to Cosworth-built blocks, requires specialist machining or full replacement.
  • Timing chain tensioner wear - less common but documented on high-mileage early units, can cause rattling on cold start.

Specs

Petrol · 5.9L · 470hp · Naturally Aspirated

Replacement Cost

Typical UK rebuilt engine: £22,000-£27,000 (supply only) Estimated from comparable AM11 units - actual quotes may vary due to Cosworth-specific rebuild requirements.

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Variants We Cover

Aston Martin DB9 Engine ReplacementAll Variants Covered

Not sure which variant your Aston Martin DB9 is- Enter your registration number above - we'll identify the exact sub-model, engine code and compatible replacement options instantly.

Engine Codes

Aston Martin DB9 Engine Codes

Every engine code fitted to the Aston Martin DB9 across all generations, with technical specs, compatible variants and trims, known failure points, and average rebuilt prices from UK specialists. Select any engine code to compare quotes.

Petrol Engines

Extracted from detailed petrol and performance engine families across Aston Martin DB9 variants.

Can't find your engine code-

Can't find your engine code- Enter your registration number above - we'll instantly identify the exact unit, its technical specifications, and live replacement prices from UK Aston Martin DB9 engine specialists. Every rebuilt engine comes with a minimum 12-month unlimited mileage warranty.

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Common Problems

Aston Martin DB9 Engine Problems

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Save vs Main Dealer Price

Disclaimer: All prices are indicative UK market ranges based on historical quote data and repair requests from our network of engine specialists. Dealer pricing is estimated based on published main dealer labour rates and genuine OEM parts pricing. Specialist pricing reflects actual quote data from EngineMarket's UK network. Actual costs vary depending on damage severity, vehicle condition, variant, and workshop location within the UK. Use our free comparison tool to get tailored quotes for your specific Aston Martin DB9 and engine code. Every engine supplied through EngineMarket carries a minimum 12-month unlimited mileage warranty - always confirm exact terms with your chosen supplier.

Replacement Engine Options

Aston Martin DB9 Replacement Engine Types

Every DB9 V12 engine type is available through our UK network with typical price ranges based on variant, engine code and budget.

Aston Martin DB9 Refurbished EnginesTargeted refurbishment of your DB9 V12 focusing on known failure points like lash adjusters and coil packs.
Typical Price
£15,000 - £22,000
(supply only)
View refurbished Aston Martin DB9 engine options
Refurbished

Refurbished DB9 engines address specific known issues without full strip-down, offering a middle-ground solution for targeted failures.

  • Cost-effective for DB9s with isolated ticking or misfire issues
  • Typically includes lash adjuster, coil pack and seal replacement
  • Verify warranty terms and which components are covered before purchase
Typical Price
£15,000 - £22,000
(supply only)
View refurbished Aston Martin DB9 engine options

All rebuilt engines include a minimum 12-month warranty when sourced through EngineMarket. Prices are typical UK market ranges based on historical quote data from our network and depend on exact engine code, variant, mileage and supplier. Use our free comparison tool above - enter your registration to get tailored quotes for your specific Aston Martin DB9 within hours.

Engine Sizes

Aston Martin DB9 Engines by SizeFind the Right Displacement for Your Variant

Every displacement fitted to the Aston Martin DB9 is listed below, with compatible engine codes, production years and common failure notes to help you identify the correct replacement.

The 5.9L (5,935cc) naturally aspirated V12 powered all pre-facelift DB9 models from 2004-2008, delivering 470bhp with Cosworth engineering input. This displacement is associated with the AM11 engine code and represents the majority of early DB9 replacement demand, particularly for ticking noise and oval bore issues.

ENGINE CODE(S)AM11, AM11 (Cosworth-built)
COMPATIBLE MODELS (UK)2dr Coupe 6.0 V12 (2004-2008), Volante 6.0 V12 (2004-2008), Sport Pack variants
Common Failure Points

Hydraulic lash adjuster ticking, oval cylinder bore wear on early Cosworth blocks, coil pack failure on cylinders 3/9/10

Compare Aston Martin DB9 5.9L petrol engine prices

Not sure which engine size your Aston Martin DB9 needs- Enter your registration number above - we'll identify the exact displacement, engine code and compatible replacement options instantly. All engines supplied through EngineMarket include a minimum 12-month unlimited mileage warranty from UK Aston Martin DB9 specialists.

Fuel Type

Aston Martin DB9 Engines by Fuel Type

Choose your Aston Martin DB9 engine by fuel type to compare realistic replacement prices, known issues, and compatible UK supply options - from early 470bhp AM11 to the latest 510bhp AM11A.

The DB9 was exclusively offered with a naturally aspirated 5.9L/6.0L petrol V12 across all UK generations, with AM11 and AM11A codes representing pre- and post-facelift specifications.

Common Aston Martin DB9 Petrol Engine Families
AM11
pre-facelift 470bhp V12 (2004-2008), known for lash adjuster ticking and oval bore concerns on early Cosworth blocks
AM11A
facelift 510bhp V12 (2008-2012), refined but still susceptible to ignition coil and valve-train issues
Found In
First Generation Coupe/Volante (2004-2008)
AM11 5.9L V12
Facelift Generation Coupe/Volante (2008-2012)
AM11A 6.0L V12
Known For
Distinctive naturally aspirated V12 character and Cosworth engineering heritage
Hydraulic lash adjuster ticking noise as the most common failure trigger for replacement
Cylinder-specific coil pack failures (3, 9, 10) causing misfires and EML illumination
High replacement cost (£17k-£27k) driving strong demand for specialist quote comparison
Typical Petrol Models
2dr Coupe 6.0 V12Volante 6.0 V12Sport Pack variantsCarbon Black EditionGT Coupe / GT Volante
Compare Aston Martin DB9 Petrol engine prices

Not sure which fuel type your Aston Martin DB9 has- Enter your registration number above to instantly identify your engine code, fuel system and compatible replacement options - all backed by a minimum 12-month unlimited mileage warranty from UK Aston Martin DB9 specialists.

Engine Years

Aston Martin DB9 Engines by YearWhat Was Fitted & When

This section covers all major engine changes across the DB9's 2004-2012 production timeline, organised so owners can quickly identify their engine and compare rebuilt engine prices from UK specialists.

2004 - 2007 - Early Production AM11 V12
Major Engine Change
Launch years featuring the Cosworth-built AM11 5.9L V12, where oval cylinder bore and lash adjuster ticking issues first emerged.
Key Changes
DB9 launched with Cosworth-assembled AM11 5.9L V12 producing 470bhp
Coupe body style introduced first, Volante convertible followed in 2005
Early production blocks identified with oval bore tolerance issues by specialist rebuilders
Known For
Cosworth engineering heritage adds enthusiast appeal and rebuild complexity
Hydraulic lash adjuster ticking noise most common failure trigger for replacement
Oval cylinder bore wear specific to early Cosworth AM11 blocks requires specialist assessment
High replacement cost (£17k-£24k) drives strong quote comparison demand
Main Engines
AM11 - 5.9L petrol (2dr Coupe 6.0 V12 / Volante 6.0 V12)
Engine Codes Covered
AM11AM11 (Cosworth-built)
Popular Models
Aston Martin DB9 2dr Coupe 6.0 V12
Aston Martin DB9 Volante 6.0 V12
Aston Martin DB9 Sport Pack variants
Common Replacement Enquiries
DB9 engine ticking noise fix
AM11 oval bore replacement
DB9 V12 misfire cylinders 3 9 10
Get quotes for 2004-2007 Aston Martin DB9 replacement engines
FAQ

Aston Martin DB9 Engine ReplacementFrequently Asked Questions

Is an Aston Martin DB9 engine expensive to replace-

Yes, DB9 V12 replacement typically costs £17,000-£27,000 for a rebuilt unit (supply only), reflecting the complex Cosworth-engineered V12 and specialist rebuild requirements.

  • AM11/AM11A V12 rebuilds require specialist machining and upgraded components
  • Labour costs are high due to complex V12 removal and installation procedures
  • Warranty coverage (12-month minimum) adds value versus private used engine purchases
Compare rebuilt AM11/AM11A engine prices for your Aston Martin DB9

What causes the DB9 engine ticking noise-

Ticking is primarily caused by hydraulic lash adjuster wear on AM11/AM11A V12 engines, with early Cosworth blocks also susceptible to oval cylinder bore wear exacerbating the issue.

  • Lash adjusters can fail between 40,000-80,000 miles on DB9 V12 engines
  • Oval bore wear on early Cosworth AM11 blocks requires specialist assessment
  • Ignition coil failure on cylinders 3, 9, 10 can mimic or accompany ticking symptoms
Get quotes for Aston Martin DB9 ticking noise repair or replacement

Should I rebuild or replace my DB9 V12 engine-

For DB9s with confirmed oval bore wear, bearing knock or high mileage (>70k), full replacement with a rebuilt unit is typically more cost-effective than repeated repairs.

  • Rebuild addresses specific failures; replacement provides comprehensive warranty coverage
  • Cosworth AM11 blocks require specialist machining not all workshops can perform
  • Factor in vehicle value (£25k-£45k) when deciding between repair investment and replacement
Compare DB9 engine rebuild versus replacement costs from UK specialists

Which DB9 year has the most engine problems-

2004-2006 pre-facelift DB9 models with early Cosworth AM11 blocks show highest failure rates for oval bore wear and lash adjuster ticking.

  • Early production Cosworth AM11 blocks have documented oval cylinder bore issues
  • 2005 model year appears most frequently in owner forum failure discussions
  • Facelift AM11A engines (2008+) show improved reliability but retain known failure patterns
Check year-specific Aston Martin DB9 engine replacement prices

Can I replace a DB9 V12 engine myself-

No, DB9 V12 replacement requires specialist tools, ECU coding expertise and Aston Martin-specific knowledge; professional installation is strongly recommended.

  • V12 removal/installation requires engine crane, transmission support and specialist fixtures
  • ECU adaptation and calibration post-installation needs dealer-level diagnostic equipment
  • Incorrect installation can cause catastrophic damage to new/rebuilt engine
Find Aston Martin DB9 engine supply & fit specialists in your area

Where can I find a DB9 engine with warranty-

EngineMarket's network of vetted UK specialists supplies rebuilt DB9 V12 engines with minimum 12-month unlimited mileage warranty as standard.

  • Warranty terms vary between suppliers; always confirm coverage details before purchase
  • Rebuilt engines with upgraded components addressing known failures offer best warranty value
  • Avoid private sales without verifiable compression test results and service history
Compare warrantied Aston Martin DB9 replacement engine options

How long does a DB9 engine replacement take-

Professional DB9 V12 replacement typically takes 5-10 working days depending on engine availability, workshop schedule and post-installation calibration requirements.

  • Engine supply lead times vary; rebuilt units may require 2-4 weeks preparation
  • Installation itself takes 2-3 days for experienced Aston Martin specialists
  • Post-installation ECU adaptation and road testing add 1-2 days to completion
Get timeline estimates with your Aston Martin DB9 engine replacement quote

What is the difference between AM11 and AM11A engines-

AM11 (2004-2008) is the pre-facelift 470bhp 5.9L V12; AM11A (2008-2012) is the facelift 510bhp 6.0L V12 with revised internals and improved but not eliminated failure patterns.

  • AM11 associated with early Cosworth blocks and oval bore concerns
  • AM11A features revised lash adjusters and increased power output to 510bhp
  • Both codes share coil pack failure pattern on cylinders 3, 9, 10
Compare AM11 versus AM11A Aston Martin DB9 engine prices

Do I need specialist fitting for DB9 engine-

Yes, DB9 V12 installation requires Aston Martin-specialist expertise for correct ECU coding, calibration and torque procedures to avoid damaging the new/rebuilt engine.

  • Specialist garages have DB9-specific tools, fixtures and diagnostic equipment
  • ECU adaptation post-installation requires dealer-level software access
  • Incorrect torque procedures on V12 can cause head gasket or bearing failure
Find vetted Aston Martin DB9 engine fitting specialists near you

Can I upgrade my DB9 engine for more power-

While aftermarket supercharger kits exist for the DB9 V12, engine replacement should prioritise reliability upgrades addressing known failures before considering performance modifications.

  • Upgraded lash adjusters and bearings should be specified on any rebuilt AM11/AM11A
  • Supercharger installations require supporting modifications to cooling and fuel systems
  • Warranty coverage may be voided by non-OEM performance modifications
Discuss reliability-focused rebuild options for your Aston Martin DB9 V12

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UK Engine Replacement Services for Aston Martin DB9

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